CONTENTS Page 



I . INTRODUCTION 1 



II . NARRATIVE OF OPERATIONS 2 



III . METHOD OF PROCEDURES 4 



A. Instrumentation and Data Collection 4 



1 . Nansen Cast 4 



2. Sound Velocimeter 4 



3 . Parachute Current Drogue 4 



4 . Current Meter 5 



5. Bottom Sediment 5 



6. Bottom Photography 6 



7. Plankton 6 



8. Bathythermograph 6 



B. Data Processing and Presentation 6 



IV. PERSONNEL AND ACKNOWLEDGMENTS 7 



V. DATA ANALYSIS 7 



A. Temperature 7 



B. Salinity 9 



C. Dissolved Oxygen 11 



D. Sound Velocity 12 



1. Computed Sound Velocity from Nansen Cast Data 12 



2. Comparison of Nansen Cast and Ramsay Velocimeter 

 Methods 13 



3. Discussion of Other Sound Velocity Influences 14 



E. Currents 16 



1 . General 16 



2 . Parachute Current Drogues 16 



3 . Current Meters 23 



4 . Dynamic Topography 28 



5. Summary of Water Circulation in the Channel Islands 



Area 29 



F. Bottom Composition 30 



1. Core Analysis 30 



2. Bottom Photography 31 



G. Biological Analysis 35 



VI. SUMMARY AND CONCLUSIONS 46 



VII. BIBLIOGRAPHY «. 49 



